Finding the Third Proportional to 406,498.50 and 603,855

Step by Step Solution

1. Step 1: Write the proportion equation
   406,498.50 : 603,855 = 603,855 : x
2. Step 2: Convert to fraction form
   406,498.50/603,855 = 603,855/x
3. Step 3: Cross multiply
   406,498.50x = 603,855 × 603,855
4. Step 4: Simplify right side
   406,498.50x = 364,640,861,025
5. Step 5: Solve for x
   x = 364,640,861,025/406,498.50
6. Step 6: Final answer
   x = 897,028.80